Browsing Artículos científicos by Title
Now showing items 281-300 of 555
-
Gametogénesis y desove de chione subrugosa (Wood, 1928) (Bivalvia veneridae) en el golfo de Nicoya, Costa Rica.
(Universidad Nacional (Costa Rica), 1986-01-01)Se estudió el ciclo reproductivo de una población de la almeja Chione subrugosa mediante métodos histológicos e índice de condición. El porcentaje de hembras y machos fue de 41,7: 58,3, respectivamente. No hubo evidencia ... -
La genealogía de doña Isabel Jiménez: una aproximación a la primera fase del mestizaje en Costa Rica
(Universidad de Costa Rica (Costa Rica), 2012)Hace 20 años, una niña blanca como la nieve nació en un pueblo de Costa Rica. Ella recibió un regalo inusual para un bebé, una amplia genealogía de sus ancestros. Un aspecto sobresaliente de dicha genealogía era que la ... -
La genealogía descendente de María de Aguilar: evidencia del mestizaje colonial temprano en Costa Rica
(Universidad Estatal a Distancia (Costa Rica), 2010-06)Por mucho tiempo historiadores y genealogistas han interpretado que la elite dominante que se formó tras la conquista española era exclusivamente europea. Se reconstruyó una genealogía matrilineal que incluye expresidentes ... -
La genealogía mitocondrial de Ana Violeta Murillo Roldán y el haplogrupo C en Costa Rica
(Asociación de Genealogía e Historia de Costa Rica (Asogehi) (Costa Rica), 2009-02)Los avances tecnológicos de la genética han dado origen a la ciencia de la Genealogía Molecular, al brindarnos la posibilidad de abordar el estudio de las genealogías desde una nueva perspectiva, examinando personas vivas ... -
La genealogía mitocondrial de Henriette Record en Costa Rica y Estados Unidos
(Asociación de Genealogía e Historia de Costa Rica (Asogehi) (Costa Rica), 2009-12)Hacia mediados del siglo XIX, un joven costarricense, José Gregorio Rojas Vargas, viajó a estudiar medicina a San Francisco de California. Ahí conoció a la hija de un médico, una señorita llamada Emma Bennett, con quien ... -
La genealogía mitocondrial de María Mercedes Cairol Antúnez, huella de la inmigración reciente a Costa Rica
(Asociación de Genealogía e Historia de Costa Rica (Asogehi) (Costa Rica), 2012)El vertiginoso avance de las técnicas de la biología molecular, con apoyo de la antropología, permite en la actualidad detectar procesos demográficos de las poblaciones humanas. Fenómenos migratorios, expansiones poblacionales ... -
Generation and propagation of anticyclonic rings in the Gulf of Papagayo
(Taylor & Francis, 2004)Lagrangian drifting buoys, local meteorological stations and AVHRR data were used to describe the generation and propagation of anticyclonic rings in the Gulf of Papagayo during the upwelling season in 1996. Some ... -
Genomic Characterization and Functional Description of Beauveria bassiana Isolates from Latin America
(MDPI, 2023-06-29)Beauveria bassiana is an entomopathogenic fungus used in agriculture as a biological controller worldwide. Despite being a well-studied organism, there are no genomic studies of B. bassiana isolates from Central American ... -
Geostrophic circulation between the Costa Rica Dome and Central America
(Elsevier, 2008)The geostrophic circulation between the Costa Rica Dome and Central America is described from CTD observations collected in two surveys: (a) The Wet Cruise in September–October 1993, and the Jet Cruise in February–March ... -
Gestión del riesgo de desastres: Competencias para una nueva cultura hidroambiental
(Universidad Nacional, Costa Rica, 2022-01-31)The study was aimed to develop and validate competencies, methodologies, and teaching resources for a new hydro-environmental culture in disaster risk management for Costa Rican ... -
Global network of computational biology communities: ISCB's Regional Student Groups breaking barriers [version 1; peer review: not peer reviewed
(F1000 Research Ltd, 2019)Regional Student Groups (RSGs) of the International Society for Computational Biology Student Council (ISCB-SC) have been instrumental to connect computational biologists globally and to create more awareness about ... -
Growth and alkaline digestive proteases activity of Parachromis dovii larvae fed live prey and formulated diets with different protein sources
(Universidad Técnica de Manabí (Ecuador), 2022-07-16)Parachromis dovii is a carnivorous cichlid fish from Central America, which easily accepts formulated feeds since exogenous feeding starts; however, its larval growth is lower than that obtained using live food. For this ... -
Growth and feed utilization of Dow cichlid (Cichlasoma dovii) larvae fed Artemia nauplii
(Universidad de Costa Rica (Costa Rica), 1995-12-01)Growth and feed utilization of Dow cichlid larvae (Cichlasoma dovii) fed with Artemia nauplii during the [lISt 12 days are assessed and compared with the growth of the larvae of the jaguar cichlid (Cichlasoma managuense). Growth ... -
Growth and fillet yield in recirculation systems of Lobotes pacificus (Perciformes: Lobotidae), a species with aquaculture potential
(Universidad Nacional (Costa Rica), 2019-07)The genus Lobotes extends across tropical and subtropical areas of oceans such as the Atlantic and the Pacific; it is extracted in artisanal fisheries, and its aquaculture production technology is still under investigation. ... -
Growth and hydrogen production by three Chlamydomonas strains cultivated in a commercial fertilizer
(Elsevier Ltd, 2019-04-19)In the present investigation, we report the growth and hydrogen production of two wild type Chlamydomonas reinhardtii strains isolated from a tropical oxidation pond in Costa Rica. The performance of these two new isolates ... -
Growth and photosynthetic performance of five tree seedlings species in response to natural light regimes from the Central Pacific of Costa Rica
(Universidad de Costa Rica, 2013)Growth and photosynthetic performance of five seedlings of tree species in response to natural light regimes in the Central Pacific of Costa Rica. Environmental heterogeneity mostly dominated by differing light regimes ... -
Growth of Jaguar Cichlid (Cichlasoma managuense) juveniles at different oxygen levels
(Universidad Nacional, Costa Rica, 1992-01-01)The dependence of growth on the dissolved oxygen level was analyzed un juveniles of the guapote tigre, Cichlasoma managuense, in a recirculated system. The guapote tigre is relatively tolerant to low oxygen levels, averaging ... -
Growth of Oreochromis aureus fed with diets containing graded levels of coffee pulp and reared in two culture systems
(Aquaculture vol.217 no.1-4 275-283 2003, 2003)A study was conducted to compare growth and feed utilization of Oreochromis aureus fed graded levels of coffee pulp (CoP) and reared in aquaria or in pens. Diets contained 0, 130, 260 and 390 g kg 1 of oven-dried CoP. ... -
Growth of pacific snook (Centropomus nigrescens) juveniles at different salinities
(Universidad Nacional (Costa Rica), 1995-09-21)Se evaluó el crecimiento de juveniles del róbalo del Pacífico, Centropomus nigrescens con salinidades de 0, 18 y 36 ppt. No hubo diferencias estadísticas significativas ni en el crecimiento ni en el factor de conversión. ... -
Growth performance of Colossoma macropomum (Cuvier) juveniles at different feed rations
(Wiley & Sons, 1992)Growth performance, feed utilization and changes in body composition of Colossoma macropomum (Cuvier) juveniles — in the weight range 2 to 200 g — fed an artificial high protein diet, have been analysed against feed ...